Amygdala lesions eliminate viewing preferences for faces in rhesus monkeys.

Abstract:

:In free-viewing experiments, primates orient preferentially toward faces and face-like stimuli. To investigate the neural basis of this behavior, we measured the spontaneous viewing preferences of monkeys with selective bilateral amygdala lesions. The results revealed that when faces and nonface objects were presented simultaneously, monkeys with amygdala lesions had no viewing preference for either conspecific faces or illusory facial features in everyday objects. Instead of directing eye movements toward socially relevant features in natural images, we found that, after amygdala loss, monkeys are biased toward features with increased low-level salience. We conclude that the amygdala has a role in our earliest specialized response to faces, a behavior thought to be a precursor for efficient social communication and essential for the development of face-selective cortex.

authors

Taubert J,Flessert M,Wardle SG,Basile BM,Murphy AP,Murray EA,Ungerleider LG

doi

10.1073/pnas.1807245115

subject

Has Abstract

pub_date

2018-07-31 00:00:00

pages

8043-8048

issue

31

eissn

0027-8424

issn

1091-6490

pii

1807245115

journal_volume

115

pub_type

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